Tweets, status updates, pins, check-ins: They may seem trivial to you, but they’re valuable content to social networking companies.

For example: Next time you make an update in Path, consider that you just helped that company make 50 cents in revenue.

Just how much value do you represent to these companies? Backupify, a cloud data backup service, decided to do some quick math. The infographic below gives you a glimpse. Dividing the estimated valuation of the company by the number of users tells you, roughly, how much value each user contributes to the company’s value.

Path: $12.50 per user

Instagram: $18.52

Yelp: $21.21

Pinterest: $28.09

Foursquare: $40.00

Twitter: $71.43

Dropbox: $80.00

LinkedIn: $104.46

Facebook: $118.34

But it’s the value of each individual status update that’s especially interesting. To get this number, Backupify took each company’s estimated annual revenue and divided it by the number of items of content. Here are the results:

Tweet: $0.001

Facebook share: $0.024

LinkedIn search: $0.124

FourSquare check-in: $0.40

Path update: $0.50

Yelp review: $9.13

I don’t know about you, but it’s hard for me to imagine that a simple FourSquare check-in is worth 40 cents — or that there are any Yelp reviews at all that would be worth nearly $10. But that’s market economics for you.